Final answer:
The Content-Aware Fill feature in Photoshop allows users to fill selected areas intelligently by analyzing surrounding pixels. The term 'fill factor' is not directly related to this feature but generally describes the proportion of area occupied in other contexts, such as patterns.
Step-by-step explanation:
You can use the Content-Aware Fill feature in Photoshop to easily fill an area by allowing the software to intelligently calculate the area within the selection. This powerful tool is part of Photoshop's retouching functionalities and works by analyzing the surrounding pixels to make a seamless fill. While the term fill factor can describe the fraction of total area occupied in various contexts, such as a pattern on fabric, in the realm of Photoshop, Content-Aware Fill algorithmically determines how to best fill the selected area with convincing, contextually appropriate detail.